812976161697 has 80 divisors (see below), whose sum is σ = 1449426730752. Its totient is φ = 444008822400.

The previous prime is 812976161693. The next prime is 812976161729. The reversal of 812976161697 is 796161679218.

812976161697 is a `hidden beast` number, since 8 + 1 + 2 + 9 + 7 + 6 + 1 + 616 + 9 + 7 = 666.

812976161697 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 812976161697 - 2² = 812976161693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (812976161693) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 16942383 + ... + 16990299.

Almost surely, 2^812976161697 is an apocalyptic number.

It is an amenable number.

812976161697 is a deficient number, since it is larger than the sum of its proper divisors (636450569055).

812976161697 is a wasteful number, since it uses less digits than its factorization.

812976161697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49260 (or 49251 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 63.

The spelling of 812976161697 in words is "eight hundred twelve billion, nine hundred seventy-six million, one hundred sixty-one thousand, six hundred ninety-seven".